The United States Air Force has selected Bechtel-led National Aerospace Solutions LLC (NAS) to run key operations for the Arnold Engineering Development Complex (AEDC) at Arnold Air Force Base in Tennessee, expanding the company’s service in the defense and national security sector.

Bechtel and Crossrail have completed tunneling work on Crossrail in London, the largest engineering project in Europe. The 26 miles of tunnels (42 kilometers), which required the use of eight tunnel boring machines, were completed on schedule in just three years. Bechtel was hired in 2009 as Crossrail Limited’s delivery partner as part of an integrated team to program manage the on-time delivery of the new railway line through central London.